I may be wrong but I'm pretty sure you don't get unemployment for getting fired. You may get a severance package from the company tho. But that doesn't excuse the fact that just collecting unemployment for no reason is taking advantage

Either way that means OP didn't need to be there until an hour later than normal. But if their boss meant it will open an hour later but wanted them there at the normal time then they should have specifically said that.

Generally speaking, it's better to ask for clarification about things like that, even if you think you understand what they meant. Better to look like an idiot than be fired or reprimanded because your employer used unclear language in instructions.